CN110615911A - Polyethylene high-rate foaming material and preparation method thereof - Google Patents
Polyethylene high-rate foaming material and preparation method thereof Download PDFInfo
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- CN110615911A CN110615911A CN201911040553.9A CN201911040553A CN110615911A CN 110615911 A CN110615911 A CN 110615911A CN 201911040553 A CN201911040553 A CN 201911040553A CN 110615911 A CN110615911 A CN 110615911A
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- polyethylene
- foaming
- solution
- foam
- foamed material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/06—CO2, N2 or noble gases
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/16—Ethene-propene or ethene-propene-diene copolymers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a polyethylene high-rate foaming material and a preparation method thereof, wherein the preparation method comprises the following steps: s1: preparing a polyethylene solution; mixing low-density polyethylene and high-density polyethylene, wherein the mass percent concentration of the obtained polyethylene solution is 10-25%; s2: dissolving ethylene propylene diene monomer in the polyethylene solution to obtain a mixed solution; the mass percentage concentration of the ethylene propylene diene monomer in the mixed solution is 1.25-8%; s3: stirring the mixed solution; s4: freezing the foaming liquid by using liquid nitrogen to obtain a foaming body; s5: centrifuging the foaming body by a centrifuge to prepare a foaming elastomer; s6: and (3) freeze-drying the foamed elastomer to obtain the foamed material. The invention uses the mixed liquid of the low-density polyethylene and the high-density polyethylene, and the mixed liquid is stirred and centrifuged, thereby having the advantages of uniform foam holes, high density, large compression modulus and the like.
Description
Technical Field
The invention relates to the technical field of polyethylene foam materials, in particular to a polyethylene high-rate foam material and a preparation method thereof.
Background
The foam material can be used as materials for sound absorption, shock resistance, heat insulation, heat preservation, floating and the like because of the properties of light weight, heat insulation, sound insulation, water resistance, buffering and the like, and has been widely applied to the fields of automobiles, buildings, daily necessities, packaging, medical appliances and the like.
Polyethylene is one of general plastics, and the foaming material has the advantages of no toxicity, low price, light weight, excellent moisture resistance, good chemical stability and easy forming and processing, and is widely applied to shockproof packaging of building heat preservation, refrigerator heat preservation, sports venue facilities, electronic instruments, precision instruments and the like. If the nano-porous polyethylene foam material can be prepared, the sufficient mechanical property of the nano-porous polyethylene foam material can be maintained while the purpose of reducing weight is achieved, the thermal barrier property of the nano-porous polyethylene foam material is improved, and the nano-porous polyethylene foam material has extremely high application value.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a polyethylene-based high-expansion foamed material and a method for producing the same.
The invention realizes the purpose through the following technical scheme:
a polyethylene high-rate foaming material and a preparation method thereof comprise the following steps:
s1: preparing a polyethylene solution; mixing low-density polyethylene and high-density polyethylene, wherein the mass percent concentration of the obtained polyethylene solution is 10-25%;
s2: dissolving ethylene propylene diene monomer in the polyethylene solution to obtain a mixed solution; the mass percentage concentration of the ethylene propylene diene monomer in the mixed solution is 1.25-8%;
s3: stirring the mixed solution;
s4: freezing the foaming liquid by using liquid nitrogen to obtain a foaming body;
s5: centrifuging the foaming body by a centrifuge to prepare a foaming elastomer;
s6: and (3) freeze-drying the foamed elastomer to obtain the foamed material.
Preferably, according to step S1: the weight part ratio of the low-density polyethylene to the high-density polyethylene is 25: 43.
preferably, according to step S2: the weight part ratio of the ethylene propylene diene monomer to the polyethylene solution is 4: 68.
preferably, according to step S3: the stirring speed is 100-450 r/min, and the stirring time is 45-60 min.
Preferably, according to step S5: the rotating speed of the centrifugal machine is 10000-30000 r/min, and the rotating time is 50-100 min.
A polyethylene foam obtained by the process for producing a polyethylene foam according to claim 1.
According to the invention, micropores with the aperture of 150-180 mu m are preferably uniformly distributed on the polyethylene foaming material.
Preferably, the porosity of the polyvinyl alcohol foaming material is 97-99%.
Preferably, the polyvinyl alcohol foam material is a shape memory polymer.
Preferably, the compression stress in a dry state is 130-190kPa, the hardness is 15-32HSC, and the rebound resilience is 65-75%.
The invention has the beneficial effects that:
the invention uses the mixed liquid of the low-density polyethylene and the high-density polyethylene, and the mixed liquid is stirred and centrifuged, thereby having the advantages of uniform foam holes, high density, large compression modulus and the like.
Detailed Description
The invention is further illustrated below:
a polyethylene high-rate foaming material and a preparation method thereof comprise the following steps:
s1: preparing a polyethylene solution; mixing low-density polyethylene and high-density polyethylene, wherein the mass percentage concentration of the obtained polyethylene solution is 10% -25%, and the weight part ratio of the low-density polyethylene to the high-density polyethylene is 25: 43;
s2: dissolving ethylene propylene diene monomer in the polyethylene solution to obtain a mixed solution; the mass percentage concentration of the ethylene propylene diene monomer in the mixed solution is 1.25-8%, and the weight portion ratio of the ethylene propylene diene monomer to the polyethylene solution is 4: 68;
s3: stirring the mixed solution, wherein the stirring speed is 100-450 r/min, and the stirring time is 45-60 min;
s4: freezing the foaming liquid by using liquid nitrogen to obtain a foaming body;
s5: centrifuging the foaming body by a centrifuge to prepare a foaming elastomer, wherein the rotating speed of the centrifuge is 10000-30000 r/min, and the rotating time is 50-100 min;
s6: and (3) freeze-drying the foamed elastomer to obtain the foamed material.
The polyethylene foam material obtained by the preparation method of the polyethylene foam material according to claim 1, wherein micropores with the pore diameter of 150-180 μm are uniformly distributed on the polyethylene foam material, the porosity of the polyvinyl alcohol foam material is 97-99%, the polyvinyl alcohol foam material is a shape memory polymer, the dry state compression stress of the polyvinyl alcohol foam material is 130-190kPa, the hardness of the polyvinyl alcohol foam material is 15-32HSC, and the resilience rate of the polyvinyl alcohol foam material is 65-75%.
In conclusion, the invention has the advantages of uniform foam pores, high density, high compression modulus and the like by using the mixed solution of the low-density polyethylene and the high-density polyethylene and stirring and centrifuging the mixed solution.
As will be realized, the invention is capable of other and different modifications and its several details are capable of modifications in various obvious respects, all without departing from the spirit and scope of the present invention.
Claims (10)
1. The preparation method of the polyethylene high-rate foaming material is characterized by comprising the following steps:
s1: preparing a polyethylene solution; mixing low-density polyethylene and high-density polyethylene, wherein the mass percent concentration of the obtained polyethylene solution is 10-25%;
s2: dissolving ethylene propylene diene monomer in the polyethylene solution to obtain a mixed solution; the mass percentage concentration of the ethylene propylene diene monomer in the mixed solution is 1.25-8%;
s3: stirring the mixed solution;
s4: freezing the foaming liquid by using liquid nitrogen to obtain a foaming body;
s5: centrifuging the foaming body by a centrifuge to prepare a foaming elastomer;
s6: and (3) freeze-drying the foamed elastomer to obtain the foamed material.
2. The method for producing a polyethylene-based high-expansion foamed material according to claim 1, wherein the step of S1: the weight part ratio of the low-density polyethylene to the high-density polyethylene is 25: 43.
3. the method for producing a polyethylene-based high-expansion foamed material according to claim 2, wherein the step of S2: the weight part ratio of the ethylene propylene diene monomer to the polyethylene solution is 4: 68.
4. the method for producing a polyethylene-based high-expansion foamed material according to claim 1, wherein the step of S3: the stirring speed is 100-450 r/min, and the stirring time is 45-60 min.
5. The method for producing a polyethylene-based high-expansion foamed material according to claim 1, wherein the step of S5: the rotating speed of the centrifugal machine is 10000-30000 r/min, and the rotating time is 50-100 min.
6. A polyethylene foam obtained by the process for producing a polyethylene foam according to claim 1.
7. The polyethylene high-rate foam material as claimed in claim 6, wherein micropores with a pore diameter of 150-180 μm are uniformly distributed on the polyethylene foam material.
8. The polyethylene high-expansion foam according to claim 6, wherein the porosity of the polyvinyl alcohol foam is 97 to 99%.
9. The polyethylene-based high-magnification foamed material according to claim 6, wherein the polyvinyl alcohol foamed material is a shape memory polymer.
10. The polyethylene high-rate foam material as claimed in claim 6, wherein the dry state compressive stress is 130 kPa to 190kPa, the hardness is 15 HSC to 32HSC, and the resilience is 65 HSC to 75 HSC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911040553.9A CN110615911A (en) | 2019-10-29 | 2019-10-29 | Polyethylene high-rate foaming material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911040553.9A CN110615911A (en) | 2019-10-29 | 2019-10-29 | Polyethylene high-rate foaming material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110615911A true CN110615911A (en) | 2019-12-27 |
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| CN201911040553.9A Pending CN110615911A (en) | 2019-10-29 | 2019-10-29 | Polyethylene high-rate foaming material and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005290329A (en) * | 2004-04-05 | 2005-10-20 | Sekisui Plastics Co Ltd | Ethylene-based resin foamed sheet, formed product and method for producing the ethylene-based resin foamed sheet |
| CN106317631A (en) * | 2016-08-29 | 2017-01-11 | 湖北祥源新材科技股份有限公司 | Polypropylene foamed sheet and preparation method thereof |
| CN108473732A (en) * | 2015-12-03 | 2018-08-31 | 陶氏环球技术有限责任公司 | high porosity microporous polyethylene |
-
2019
- 2019-10-29 CN CN201911040553.9A patent/CN110615911A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005290329A (en) * | 2004-04-05 | 2005-10-20 | Sekisui Plastics Co Ltd | Ethylene-based resin foamed sheet, formed product and method for producing the ethylene-based resin foamed sheet |
| CN108473732A (en) * | 2015-12-03 | 2018-08-31 | 陶氏环球技术有限责任公司 | high porosity microporous polyethylene |
| CN106317631A (en) * | 2016-08-29 | 2017-01-11 | 湖北祥源新材科技股份有限公司 | Polypropylene foamed sheet and preparation method thereof |
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Application publication date: 20191227 |